Delta Air Lines Boeing B757 Diverts To Portland Following Compressor Stall

A Delta Air Lines flight from Boston to Edinburgh diverted to Portland, Maine on Saturday (17/08/19). According to The Aviation Herald, the aircraft suffered a compressor stall.

Delta B757-200 landing
Delta Air Lines DL-122 diverted to Portland, Maine due to engine malfunction. Photo: Eric Salard [CC BY-SA 2.0], Wikimedia Commons
Delta Air Lines DL-122 departing Boston Logan International Airport bound for Edinburgh was carrying 153 passengers. On its ascent out of Boston at roughly 27,000 feet, the aircraft’s starboard engine experienced a compressor stall.

The crew stopped the climb and requested from air traffic control a descent and vectors to the nearest suitable airfield. Having headed due northeast, the crew was advised to make for Portland International Jetport.

The 757-200 (registration N712TW) made a safe landing at 23:09. The flight departed Boston at 22:29 local time. Writes The Aviation Herald, a replacement flight of the same type reached Edinburgh 15 hours overdue.

What is a compressor stall?

A compressor stall occurs when the airflow through the compressor blades of a jet turbine engine is disrupted. The imbalance of airflow supply and demand causes the air pressure in the engine to be incompatible with the RPM at which it is running.

Delta B757-200 on apron
Compressor stall: a problem by degrees. Photo: Alan Wilson [CC BY-SA 2.0], Wikimedia Commons
A compressor stall may be minor, causing small fluctuations in power, or it may be severe enough to cause the engine to slow down or stop. Serious accidents of modern aircraft caused by compressor malfunctions are less common than they were, but they are not unheard of.

Compressor stalls are caused by a number of factors:

  • Foreign object damage
  • Contaminated compressor components
  • Ice accretion
  • Extreme maneuvers
  • Improper engine inputs

Aircraft incidents due to compressor stall

Of passenger airlines, there is only one widely popularized compressor stall event. US Airways flight 1549 had departed New York City’s LaGuardia Airport on January 15th, 2009. 90 seconds after taking off, the A320’s engines ingested a flock of geese. The event caused a compressor surge which led to a flame-out of both engines. The pilot ditched the plane on the River Hudson just minutes after departure.

In 1982 a British Airways 747-200 experienced a simultaneous flame-out of all four of its engines. This was due to the engines being starved of fuel by the ingestion of volcanic ash emanating from Mount Galunggung, Indonesia. At 13,500 and descending the flight crew was able to restart the engines.

Delta B757-200 landing
Fuel starvation a problematic outcome of compressor stall. Photo: Neuwieser from Germany [CC BY-SA 2.0], Wikimedia Commons

Delta Air Lines

Of Delta’s event, however, a bigger question arises. In light of concerns about the environmental impact of commercial aviation, some industry observers seek a reason for the carrier flying just 153 people 3,000 miles in an aircraft built to carry up to 250.

Delta is currently well-placed to spearhead sustainable best practice. To indulge environmental campaigners and lobbyists, the airline need only to improve its customer-mile efficiency by the reduction or removal of low-volume flights.

Routes that maximize aircraft utilization are today advocated with growing vigor by customers worldwide. Thus it would be reasonable, and admirable, to expect that of a route such as this, a “cleaner” option was sought.

Despite there being an effect on the convenience and comfort of passengers, Delta’s lessening of its carbon footprint for consonant demand would set the airline apart from others less willing to address environmental degradation.

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Albert Vitale

The article was fine until the author had to go green. Save the planet by causing DVT with Ryanair seating on a Delta 757. This is inexcusable and asign of how bad things have gotten with self anointed environments.

Really discrediting itself. Passenger comfort, business class and service count. If you want green take a dirigible or maybe cargo ship cabin.

Disgusted.!

Nigel

Whether you’re an environmentalist or not, flyers are going to have to come to terms with the fact that the aviation industry is being targeted by greenies — regardless of whether or not that’s justifiable. Europe already has become acquainted with the phenomenon of flight shame, and it probably won’t be long before flyers will be heckled and pelted with eggs at airports. Under those circumstances, the aviation industry would do well to remove the obvious “low-hanging fruit”, so as to (try to) take the wind out of environmentalists’ sails. Airlines who are under-utilizing aircraft — either due to low… Read more »

Joseph Wilson

I flew home on a Delta 757 last week from Atlanta to San Diego. Although I had an exit row seat, there was no entertainment at my seat and it wasn’t as comfortable as the Airbus jet that I had flown a week earlier from San Diego to Atlanta. Retirement of the Boeing 757 and 767 aircraft will make Delta a better airline.

Kaden

Could you right a article on when Delta will replace their OLD 757’s and with what please? Thanks!

Tom Boon

Thanks for the idea, Kaden!

Herb33

When reporting on engine problems it is important to identify the engine type. The 757 can have either PW2037 or RR RB211-535. I believe all Delta 757s use PW engines, the top picture shows a PW engined Aircraft, identifiable by the nacelle with separate exhausts. A320 family can have IAE, PW or CFM engines and 767 can have GE, PW or RR engines and engine choices can be found on earlier 777s, 747s and A330s.